#include <iostream>
using namespace std;

int main() {
    int n,m;
    cin >> n >> m;
    int a[n][m], b[n][m];
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < m; j++)
        {
            cin >> a[i][j];
        }
    }
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < m; j++)
        {
            cin >> b[i][j];
        }
    }

    int list[n][m];
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < m; j++)
        {
            list[i][j] = a[i][j] + b[i][j];
            cout << list[i][j] << " ";
        }
        cout << endl;
    }
    
    return 0;
}